Concrete-pipe machine



' 0. F. HEER AND 0.-I0HNS0N.

CONCRETE PIPE MACHINE.

APPLICATION FILED DEC. 9, I9Ia.

l ,330,760. Patented Feb. 10, 1920.

2 SHEETS-SHEET I.

A BY ATTORNEY.

0. F. HEER AND 0. JOHNSON. GoNcREE PIPE MACHINE.

. APPUCATION FILED DEC. 9. |918. 1,330,760. l Patented Feb.10,1920.

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OTTO F. HEER AND OLAF JS'ON, OF ONTARIO, CALIFORNIA.

CONCRETEPI1JE MACHINE.

Application filed llecember 3, 1918.

To all whom it may concern.'

'Be it known that we, Utrro F. HEER and @LAF JOHNSON, citizens of the `United States, residing at Untario, in the county of San Bernardino and State of California, have invented new and useful improvements in Concrete-Pipe Machines, of which the following is a speciiication.

This invention relates to concrete pipe machines yand consists of the novel features herein shown, described and claimed.

An object of this invention is to readily make lengths of con-crete pipe, each length having a female end and a male end so that the lengths will go together and make a straight line of pipe, that is without any projecting beads.

Another obj ect of this invention is to make a machine which can be rapidly operated to turn out lengths of concrete pipe.

Another object of this invention is to make a machine in which the pipe is constantly rotated on the core as the pipe is tamped so as to keep the core loose for removal from the pipe.

Another object of this invention is to pros vide means for thoroughly tamping the con crete in the mold around the core as the concrete passes into the mold to build up the pipe.

Figure 1 is a side elevation of a concrete pipe machine embodying the principles of our invention, the view being taken looking` in the direction indicated by arrow 1 in Fig. 2 and parts being broken away and shown in section.

Fig. 2 Vis a top plan view as indicated by the arrow 2 in Fig. 1.

Fig. 3 is an enlarged fragmentary sectional detail on the line 3-3 of Fig. 1.

Fig. 4 is an enlarged fragmentary perspective showing` the adjustable mounting df the tamper shaft.

Fig. 5 is anfenlarged fragmentary sectional detail on the lines 5-5 of Figs. 2 and 6 and looking in the direction indicated by the arrow and showing the former for iinishing the upper end of the concrete pipe.

Fig. 6 is a fragmentary side elevation lookingy in the direction indicated by arrow 6 in Fig. 5.

Referring to the drawings in detail, the base of the main frame consists of channel irons l, 2 .and 3 mounted parallel and in a Specication of Letters Patent.

Patented Feb. 10, 1920.

Serial No. 266,004.

horizontal level and connected together by irons 4l and 5. A shaft 6 is mounted in bearings 7 and S secured to the bottoms of the channel irons 1 and 2. A sprocket wheel 9 is fixed upon the shaft 6 near its center, and a bevel gear 10 is fixed upon one end of the shaft 6. A sub-frame 11 is secured to the main frame and extends downwardly. A thrust bearing 12 is built upon the subframe. A shaft 13 is mounted vertically with its lower end in the bearing 12, and a bevel gear 14 is fixed upon the shaft 13 in mesh with the bevel gear 10. The shaft 13 extends upwardly through the bearing 15. A driving shaft 16 is mounted in bearings 17 and 18 parallel with the shaft 6, and a driving pulley 19 is fixed upon the outer end of the shaft 16. sprocket wheel 20 is fixed upon the shaft 16, and a chain 21 connects the sprocket 9 to the sprocket 20. A pulley 22 is lined upon the shaft 16.v A winding drum shaft 23 is mounted in bearings 211 and 25 parallel with the drive shaft 16. A pulley 26 is xed upon the winding drum shaft 23 and a belt 27y connects the pulley 22 to the pulley 26. A winding drum 23 is loosely mounted on the shaft 23. A planetary clutch 29 connects the winding drum 28 to the shaft 23 when desired, said planetary clutch being operated by a handle 30 to connect and disconnect.

Angle iron posts 31 and 32 extend upwardly from` the channel irons 2 and 3 to form a vertical slideway, the upper ends of the posts being rigidly connected by a bar 33. In plan, the posts 31 and 32 are diagonal of the main frame, and the bar 33 has an end 34 extending to a point almost directly above the winding drum 28. A guide pulley 35 is mounted upon the bar 33 substantially half way between the posts 31 kand 32, and a second guide pulley 36 is mounted upon the outer end 341 of the bar 33. Bearings 37 and 38 are iiXed to the angle iron 32, and similar bearings, not shown, are Xed to the angle iron 31. A crosshead 39 fits horizontally in the angle irons 31 and 32, the channels in the angle irons serving to form guideways in which the ends ofthe crosshead 39 slide up and down. A cable 40 is attached to the bar 33 and extends downwardly under a guide pulley l1 attached to the crossheadk 39 and upwardly over the guide pulley 35 and laterally over the guide pulley 36 and downwardly an d is attached to and wound upon the winding drum 28. A rod 42 is fixed in the end of the crosshead 39 and slidingly mounted in the bearings and 38, and a similar rod, not shown, is'

fixed to the other end of the erosshead 39 and extends through the bearings carried by the post 31. A Collar 43 is fixed upon the rod 42 and a braee 44 connects the collar 43 to the intermediate part of the crosshead 39. A similar brace 45 connects the crosshead 39 to the other collar. The collar 43 is above the bearing 37, and the rod 42 extends a considerable distance below the bearing, so that the crosshead 39 may go up and down to the extent of the distance between the bearings 37 and 38. n

A core supporting frame 46 is rigidly connected to the central. part of the crosshead 39 and extends downwardly. The pipe casting core 47 is fixed upon the lower end of the frame 46.

A board platform i8 is mounted upon the channel irons 2 and 3, and the shaft 13 extends upwardly through the platform 48. A mold base 49 is fixed upon the upper end of the shaft 13 above the platform 4S, the body of said mold base 49 being a fiat disk. A guide pin 50 extends upwardly from the center of the base 49. The annular iange ring 51 is L-shape in cross section. The pipe mold 52 is mounted endwise upon the base 49 and lits closely around the fiange ring 5l. A bead 53 extends outwardly around the lower end of the pipe mold, and stop plates 54 and 55 are bolted to the base 49 to fit against the bead 53. Shoulders are formed upon the bead 53 to engage the shoulders upon the plates 54 and 55 to hold the pipe mold from rotating upon `the base 49. The pipe mold 52 is adapted to make a desired length of concrete pipe, and the body of the mold is a cylinder made in two pieces meeting` on a diametrioal. line and held together at one side by hinges 576 and connected together at the other side by latches 57. Handles 5S are formed near the upper end of the mold for lifting` the mold.

The core 47 is a piece of metal casing straight and circular and cut at the desired length. the core being?r considerably longer than the mold 52. A cross piece 59 is fixed in the lower end of the core and has a cen tral openingl to receive the pin 50, so as to hold the core concentric to the mold 52, thereby producing a straight castingchamber 60 outside of the core and inside of the mold. A funnel 61 is secured against the outer face of the core 47 in position to discharge into the castingchamber 60. The core 47 is held stationary by the frame 46, and the crosshead 39 during the operation of casting the pipe and the mold 52 is rotated by the connection to the drive shaft 16. During the process of casting the pipe in the chamber 60 the concrete will stick to the inner face of the mold 52 and the fiange 5l and rotate upon the core 47.

The tamper shaft 62 is mounted in bearings 63 and 64 substantially parallel with the drive shaft 16. The bearinoq 63 is mounted between two horizontal angle irons, so that the bearing may move laterally, and the bearing 64 is likewise mounted between two horizontal angle irons to move laterally. Gripping` plates 65 and 66 are attached to the angle irons between which the bearing 64 is mounted, and the inner end of the bearing' 64 slides between the plates 65 and 66. Rods 67 and 68 are inserted through the plates 65 and 66, the lower ends of the rods being fixed relative to the plate 66, and the upper ends of the rods being connected to an eccentric cam 69. A handle 70 extends from the cam 69, so that when the handle 70 is raised the plates 65 and 66 are loosened to release the bea-ring 64, and when the bearing` has been moved laterally to the desired position, the handle 70 is lowered to cause the plates 65 and 66 to grip the bearing' 64 and hold the bearing and shaft 62 in its adjusted position. By manipulating the handle 70 to loosen the bearing 64 the tam per mechanism may be moved laterally out of the way, so that it will not interfere with manipulating the mold 52. A tight pulley 71 is fixed upon the shaft 62, and a loose pulley 72 is mounted beside the tight pulley 71. A belt 73 runs upon the pulley 22 and upon the pulleys 71 and 72, there beinga belt shifter 7 4 for moving the belt from the tight to the loose pulley and vice versa.

Guide arms 75 and 76 are rigidly fixed to the bearing 64 and' carry bearings 77 and 7 8. said bearings 77 and 78 being` in vertical alinement. The tamper bar 79 is slidingly mounted in the bearings 77 and 78. A crank 8O fixed upon the inner end of the shaft 62, and a link or pitman S1 is connect ed to the crank pin 82 forming part of the crank SO. A sleeve 83 fits loosely upon the tamper bar 79. A leaf spring 84 is mounted in the opening 85 of the sleeve to bear against the tamper bar 79, and a set screw S6 is tapped through the, sleeve to engage the spring 84 and adjust the tension of the spring 84 against the tamper 79, there being a. lock nut 87 upon the set screw. The pitn'an 8l is connected to the sleeve 83, so that as the shaft 62 rotates the tamper 79 will be reciprocated. The lower end of the tamper 79 extends downwardly to the bottom of the casting chamber 60 until the concrete is poured into the chamber through the funnel 61 and the tamper reciproeates in a vertical plane aloneside of the core 47, and of course, as the mold 52 rotates it travels around the tamper, so that the tamper will engage the concrete at the bottom of the casting chamber 60 all the way around, and

as the concrete fills up the chamber the pressure upon the tamper will increase until it overcomes the friction between the spring 84 and the tamper, and the tamper will gradually rise as the pipe is formed.

The former 88 is secured to the core 47 in position to iinish the upper end of the concrete pipe 89. The former 88 consists of an attaching plate 90 having an inner face 91 fitting against the periphery of the core 47 and secured in place by bolts or rivets 92, the tongue 93 extending downwardly from the attaching plate 88 and having an inclined outer face 94 and a runnershaped lower edge 95, and a lip 9S extending outwardly from the attaching plate and having a runner-shaped lower face 97. The tongue 93 is adapted to form a recess 98 in the upper end of the pipe 89 to receive the flange 99 Jformed by the flange 51 upon the lower end of another length of pipe. The runner-shaped lower edge 95 Yserves as a packer to pack the concrete at the upper end of the pipe at the bottom of the recess 98, and the ruimer-shaped lower face 97 serves as a packer to finish the extreme upper edge of the pipe 89. The former 88 is preferably located at the opposite side of the core 47 from the tamper 79, and of course, the core remaining stationary the former does not interfere with the action of the tamper.

`When the machine is ready for action, with the parts as shown in Fig. l, the concrete is poured through the funnel 6l, the

lmold 52 is rotated, the core 47 remains stauntil the chamber is iilled with concrete and the recess 98 formed, and during this operation the length of pipe 89 rotates upon the core 47, thereby forming a good finish upon the inner face of the pipe to assist in making'it waterprooiz and keeping the core :trom sticking in the pipe. When the length of pipe is finished the clutch 29 is operated to raise the core 47 out oit thc pipe, then the clamps 54 and 55 are released, the handles 58 manually grasped and the mold 52 carrying the length of pipe 89 is moved to the drying table, then the mold 52 is opened and removed from the length of pipe and the length of pipe. is left to dry and cure.

It desired, several molds may be used, so that as soon as one is removed another may be placed in operation. The flange ring 51 goes along with the mold until the concrete is cured.

Especial attention is called to the automatic tamper and to the rotation of the mold and concrete upon the core.

Thus we have produced a concrete pipe machine for making lengths of pipe, the pipe being adapted to make a straight line o'f l. In a concrete pipe machine, a stationary core, a funnel secured to the stationary core, a rotating mold mounted concentric to the stationary core to form a casting chamber into which the funnel discharges, and an automatic tamper operating in the casting chamber and adapted to move upwardly under pressure of the tamped material.

2. In a concrete pipe machine, a mold base mounted to rotate on a vertical axis, a frame extending upwardly around the mold base, a crosshead mounted for vertical reciprocation in the frame, a pipe casting core connected to the crosshead, means for lifting the crosshead to lift the core, a mold fitting upon the mold base concentric to the core, and a funnel attached to the core and discharging into the space between the core and the mold.

3. In a concrete pipe machine, a mold base mounted to rotate in a vertical axis, a cross` head mounted to move up and down, a core connected to the crosshead and fitting concentrically upon the mold base, a inold fitting upon the mold base concentric to the core, a vertically reciprocating tamper adapted to operate in the space between the core and the mold, and means whereby the tamper may be moved laterally.

In testimony whereof we have signed our names to this specification.

OTTO F. HEER. OLAF JOHNSON. 

